@article{MASLO_1970__20_3_a5,
     author = {Krbi\v{l}a, Jaroslav},
     title = {Algebraick\'a \v{s}trukt\'ura mno\v{z}iny hlavn\'ych hyperbolick\'ych f\'az diferenci\'alnych rovn{\'\i}c $y''=q(t)y$ v intervale $(-\infty,\infty)$},
     journal = {Mathematica slovaca},
     pages = {195--204},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {1970},
     mrnumber = {0306633},
     zbl = {0211.11101},
     language = {sl},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1970__20_3_a5/}
}